Iranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700421120250301Enhancing Optical Properties of As2Se3: Investigating the Impact of Metal and Titanium Dioxide Nanoparticles Size1973318010.22034/ijnn.2025.2034868.2541ENAbdorezaKamaldarDepartment of Physics, Faculty of Science, Payame Noor University, Tehran, Iran,0000-0002-2590-4124HosseinShahmirzaeeMalek Ashtar University of Technology, Shiraz, IranAbdolrasoulGharaatiDepartment of Physics, Faculty of Science, Payame Noor University,
Po.Box 19395-3697, Tehran, Iran.0000-0003-3545-4611AbdorezaKamaldar2Department of Physics, Faculty of Science, Payame Noor University,
P. O. Box 19395-3697, Tehran, Iran.0000-0002-2590-4124Journal Article20240708The objective of this study is to propose a methodology for examining how the size of metal nanoparticles, specifically gold, silver, copper, and titanium dioxide affects the optical properties of chalcogenide glasses. To achieve this, spherical nanoparticles with a volume fraction below 0.1, to minimize their interaction, are dispersed within the glasses. By employing the T-matrix method, the effective dielectric constant (EDC) of the composite medium is determined as a function of nanoparticle size (radius) and volume fraction at 635nm wavelength. The corresponding diagrams are plotted to illustrate the outcomes. Finally, the findings reveal a substantial increase in the EDC of the composite medium as the radius of the nanoparticles grows, particularly when the volume fraction of the nanoparticles is increased. For instance, in the case of a 635nm wavelength and a volume fraction of 0.08, the magnitude of EDC exhibits a pronounced dependence on both the radius and type of nanoparticles. Specifically, when the nanoparticle radius is 10nm, the minimal EDC is observed with silver nanoparticles, whereas the maximal EDC is manifested with gold nanoparticles. Conversely, at a radius of 50nm, the minimal EDC is realized with gold nanoparticles, while the maximal EDC is attained with silver nanoparticles. Lastly, at a 100nm radius, the minimal EDC is associated with silver nanoparticles, and the maximal EDC is elicited by titanium dioxide nanoparticleshttps://www.ijnnonline.net/article_733180_3e19d7f93f50341ca22cf297ddf637ae.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700421120250323Exploring multiferroic properties in new lead free ceramic (Sr0.95Ba0.05)(Mn0.5Nb0.5)O3111973318210.22034/ijnn.2025.2044142.2592ENRAJ KISHOREMISHRAMAHARISHI COLLEGE OF NATURAL LAW, BHUBANESWAR0009-0000-6059-5737SrikantaBeheraDepartment of Physics, C.V.Raman Global university, Bhubaneswar, Odisha, IndiaRAJ MOHANMOHANTYDepartment of Physics, C.V.Raman Global university, Bhubaneswar, Odisha, IndiaSabyasachiParidaDepartment of Physics, C.V.Raman Global university, Bhubaneswar, Odisha, IndiaMuhammad ShahidAnwarCSIR-Instituteof Minerals and MaterialsTechnology,Bhubaneswar, Odisha,IndiaPriyabrataNayakCSIR-Instituteof Minerals and Materials Technology, Bhubaneswar, Odisha,India & Academy of Scientific and Innovative Research(AcSIR), Ghaziabad, Uttar Pradesh, IndiaBhabani SankarTripathyDepartment of Physics, ITER, Siksha ‘O’ Anusandhan University, Bhubaneswar, Odisha, IndiaJournal Article20241024A new lead free Ceramic material of complex perovskite structure (ABO<sub>3</sub>) having formula (Sr<sub>0.95</sub>Ba<sub>0.05</sub>)(Mn<sub>0.5</sub>Nb<sub>0.5</sub>)O<sub>3</sub> have been prepared by solid-state reaction technique. X-Ray Diffraction pattern of (Sr<sub>0.95</sub>Ba<sub>0.05</sub>)(Mn<sub>0.5</sub>Nb<sub>0.5</sub>)O<sub>3</sub> at ambient temperature shows that the sample has a single phase tetragonal perovskite structure. Surface morphology studied by scanning electron microscopy (SEM) shows polycrystalline nature of the prepared material with grains of uniform size having little voids. The dielectric parameters (relative permittivity or dielectric constant and loss tangent) of the samples were determined in a wide range of frequency (100Hz to 5MHz) and temperature range of 25 oC to 250 oC. Overall frequency response of the material in this observed frequency window shows low frequency relaxation phenomena, deviation from Debye type behavior. At all the frequencies the permittivity shows broad diffused peak at around 215 oC which may be attributed to ferro to paraelectric transition. The ac conductivity spectra obeys Jonscher’s universal power law. The optical band gap calculated from diffuse reflectance spectroscopy (DRS) data is 3.06 eV. Magnetization (M) in both zero-field-cooled (ZFC) and field-cooled (FC) modes measured at 0.05T shows gradual increase of magnetic field with the decrease in temperature below 300K with a magnetic order transition below 40K. Also, M-H curve at 10K shows nonlinear pattern with a small opening in hysteresis loop indicating some ferromagnetic component at low temperaturehttps://www.ijnnonline.net/article_733182_42d5438fb95c15a6f4f9138503557a92.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700421120250323Design and Simulation of Ternary Logic Circuits Using CNTFETs212973318110.22034/ijnn.2025.2045570.2601ENAnna GinaPerriDepartment of Electrical and Information Engineering
Polytechnic University of Bari
Via E. Orabona, 4, 70125 Bari, Italy0000-0003-4949-987XRobertoMaraniInstitute of Intelligent Industrial Technologies and Systems for Advanced Manufacturing (STIIMA), National Research Council of ItalyJournal Article20241111The field of portable electronics and smart devices has seen a significant shift towards multi-valued logic (MVL), especially ternary logic, due to its potential to reduce circuit complexity and power consumption. This paper shows how Carbon Nanotubes FETs (CNTFETs) can be used in the design of ternary logic gates, which is a promising alternative to the conventional binary logic design. In particular we propose a procedure to design some CNTFET-based logic gates, all in ternary logic. The main novelty is that in this paper all simulations are performed in Verilog-A, avoiding so the problems presented in SPICE. The obtained results are encouraging and demonstrate that CNTFET-based ternary logic gates can be a viable approach for the design of low-power, high-speed circuits.https://www.ijnnonline.net/article_733181_7209460c6fbadacfeea3a80a992d6182.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700421120250323Synthesis of Carbon Quantum Dots from Rice Straw Using Hydrothermal Method313973318310.22034/ijnn.2025.2047781.2610ENNguyenDuy-HoangFaculty of Mechanical Engineering, Industrial University of Ho Chi Minh City.Nguyen VanSonAdvanced Technology Center - Le Quy Don Technical UniversityNguyen KhoaTrieu12 Nguyen Van Bao, Go Vap.0000-0003-2922-1512Journal Article20241209As a form of nanomaterial, Carbon Dots (CDs) attracted the attention of researchers, due to their diverse raw material sources, low cost, ease of preparation, and numerous applications in optics, biomedicine, and energy. Our research article focused on the production of Carbon Quantum Dots (CQDs) derived from rice straw using a bottom-up approach. As the next steps, UVA lamps, SEM, FTIR, UV-Vis, and PL were used as the main analysis techniques for CDs aqueous solution as well as dried CDs. Under UV light, the color of the CDs aqueous solution changed from yellow-brown to green, indicating that CDs had formed. Subsequent SEM images showed that the average particle size of the CDs was 20 nm. Besides, FTIR analysis illustrated functional groups such as O-H, C-H, C=O, N-H, C-OH, and C-O of CQDs. Furthermore, the UV-Vis spectrum indicated suitable optical properties for pollutant interaction, while the PL spectrum confirmed strong fluorescence with excitation-dependent behavior, making these CQDs excellent candidates for sensing applications. Thus, the analytical results showed that the synthesized CQDs had suitable properties for wastewater treatment applications. Hence, this study highlighted the feasibility of converting agricultural waste into functional nanomaterials, contributing to sustainable nanotechnology and environmental management.https://www.ijnnonline.net/article_733183_3315d6a8b03f325a6a380be0c6c1f36d.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700421120250323Interfacial Properties of Aluminum Nanocomposites Reinforced with Graphene and Carbon Nanotube With and Without Defects at Different Temperatures Via Molecular Dynamics Simulation414873318410.22034/ijnn.2025.2045755.2603ENWijdanQahtan Farhan Al-HumairiUrmia university, Department of Mechanical Engineering0009-0000-2465-7435SamrandRash-AhmadiUrmia university, Department of Mechanical Engineering0000-0002-4719-7926MortezaKhalilianUrmia university, Department of Mechanical Engineering0009-0003-1907-3461Journal Article20241114In the last decade, the use of aluminum nanocomposites reinforced with graphene nanoplates and carbon nanotubes has increased. Therefore, it is essential to examine the properties of the aluminum matrix in relation to the reinforcements. In this study, molecular dynamics simulation was used to investigate the interfacial properties of several layers of graphene nanosheets and carbon nanotubes (with and without defects) in aluminum nanocomposites. The effect of temperature and the number of reinforcements was investigated in this work. The results show that by increasing the number of graphene nanoplates and carbon nanotubes (1 to 4) in the aluminum matrix, the adhesion and interaction energy improved (-600 to -2800 kcal/mol) (-400 to -1500 kcal/mol). In addition, the highest amount of pull-out force of aluminum nanocomposites reinforced with graphene corresponding to 4-layer graphene was equal to 66 kcal/mol, and for aluminum nanocomposites reinforced with carbon nanotubes corresponding to 4 carbon nanotubes, was equal to 61 kcal/mol. Also, defects in graphene nanoplates and carbon nanotubes reduce the interaction energy and pull-out force in aluminum nanocomposites. In addition, with the increase in temperature (300 to 450 K), the amount of interaction energy, adhesion, and the maximum pull-out force decreases.https://www.ijnnonline.net/article_733184_ca219cc1c4dadcd0c895387d21143d53.pdfIranian Nanotechnology SocietyInternational Journal of Nanoscience and Nanotechnology1735-700421120250323Nano Fertilizers: A New Approach to Horticultural495873319010.22034/ijnn.2025.2049877.2622ENMarina T.StojanovaFaculty of Agricultural Sciences and Food, Ss. Cyril and Methodius University, Skopje, North Macedonia0000-0002-6941-3386DragutinA. DjukicUniversity of Kragujevac, Faculty of Agronomy, Cacak, SerbiaMonikaStojanovaAssociation for Scientific-research, Educational and Cultural Activities “Open Science”, Ohrid, North Macedonia0000-0002-6525-7099Journal Article20250104Nanotechnology offers transformative potential in agriculture and horticulture, revolutionizing crop production, plant health, and resource management. Its dynamic influence is particularly evident in enhancing vegetable yields through targeted nutrient delivery. Nano fertilizers, which utilize nanoparticles with higher surface tension than conventional fertilizers, provide plants with slow-release, efficient nutrient availability. This improves nutrient uptake, reduces waste, and promotes more sustainable farming practices. Nano fertilizers are specifically designed to optimize plant growth, fertility, and pollination in flowers, resulting in higher yields and improved quality in horticultural crops. By enhancing the availability and use efficiency of nutrients, nano fertilizers minimize nutrient immobilization and enhance overall productivity.<br>This review focuses on the significance of developing nanotechnology, nanomaterials, and nano fertilizers, highlighting their potential to improve the productivity and quality of horticultural crops. It also explores how nanoparticles can enhance plant resilience, particularly in response to environmental changes, supporting food security for the growing global population. By providing targeted, efficient solutions, nanotechnology offers promising strategies for ensuring horticultural production systems' long-term sustainability and health. The application of nano fertilizers in enhancing both crop quality and environmental sustainability positions nanotechnology as a key innovation for the future of agriculture.https://www.ijnnonline.net/article_733190_9af1fbe9a7f7840b4fbaa85c4b7dc0ad.pdf